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Questions tagged [motor]

An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). There are many types of electric motors. If the specific type of motor is known, it is helpful to use or add a more specific tag, such as dc-motor, brushless-dc motor or induction-motor.

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42 views

Good book for studying electromagnets [on hold]

My current focus is to gain a deep and comprehensive understanding about electromagnetic configurations i.e. electric coil around ferromagnetic cores (of various shapes and with airgaps). I want to ...
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79 views

Servo motor too noisy [on hold]

I’m currently using a Hitec HS-645MG servo to swing a piece of thick piano wire approximately 2ft long in a 180 degree arc. Servo being controlled via Arduino. It needs to swing back and forth ...
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43 views

Best Electric Vehicle Motor for DIY [on hold]

Which motor would be the best for Cheap and a motor which can generate also and produce also... I am looking for a prototype for official car is it needs to cost less
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1answer
74 views

What is the opposite of pulse width modulation called?

If I want to control a motor by simply giving it a variable specific voltage or current, to control the RPM, not by flipping the power on and off as in pulse width modulation, what is that called?
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41 views

DC motor type to move 20lbs

Trying to use motor to rotate bottles of ink on a rotissary style configuration. At maximum about 20 lbs when totally full. Had no luck with a worm motor type, it bogs down too easily. Any ideas on ...
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52 views

Can I run a 48V BLDC motor with a 12V battery? [on hold]

I need to use a 3kW 48V BLDC motor for an electric car that I am making. I have fixed availability of power source. So, I wanted to know if I can use a 12V 220Ah lead acid battery to run this motor? ...
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44 views

Why are my motors stuttering?

Using my Arduino Uno, I have managed to arm my drone motors and keep them running continuously and stutter free. I have an esc between the motors and the arduino so I am using the Servo library. <...
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29 views

2 NICE tubular motor connections with wind sensor

Hi, I have 2 NICE Era Mat T tubular motors, working togheter with the TTBUS RS232 protocol ( Cable (1) + Cable (3) GND ). Now I have installed the 4 buttons to open/close the blinds. Without the ...
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40 views

Tradeoffs between brushed, brushless and induction motors

What are the tradeoffs associated with adopting brush-less, brushed and induction motors for designs? More specifically, if the goal is to design a servo, for example, how does the control circuitry ...
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1answer
124 views

Will resistance of wire increase with age due to some effects?

Today I had an electrical problem at my home not yet resolved. I will explain the problem. The switch for water motor and switch for lamp are nearby in same board. When I turn ON the lamp switch, the ...
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1answer
94 views

Tamper resistant induction actuator

How would one design an actuator with the following requirements: The actuator is completely isolated with no electrical contacts. Imagine a rotor encapsulated in sealed plastic cylinder. The rotor ...
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2answers
31 views

In a shunt DC motor, how quickly after losing the field will the armature current increase to its V/R limit?

In a shunt DC motor, what are the sequence of events when the field current is lost? From what I understand the loss of the field current, and thus the field itself, will result in a decrease in back ...
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1answer
45 views

Arduino AC Motor Control and Automation? [closed]

My question is about the automation of single phase AC motors. I am aware that I can purchase TRIAC controllers with manual knobs or even 0-10V control inputs. I am new to the world of AC ...
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2answers
51 views

Parameters of the 3 phase geared induction motor

I have a 3 phase geared induction motor. The name plate is below image. I couldn't find any datasheet from internet. Explain me parameters that on nameplate for entering to VFD. I need to know Rated ...
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55 views

Driving a motor freezes Arduino

I am trying to drive a Carrera Digital car (brushless DC motor) using an Arduino and an L293D h-bridge motor driver. My schematic is the following: I have also connected an IMU (GY-521 MPU-6050) to ...
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2answers
107 views

Which one of these is the phase 1? [closed]

Which one of these is the phase 1? And why isn't there a neutral wire at all? The cable is Chinese. The device it powers is a 3-phase motor that powers hydraulics. I am sorry for asking this question ...
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1answer
40 views

DC motor and its weight can carry [closed]

I have D.C motor (36V, 450W) and battery (36V, 15Ah). I dont know much weight can my motor handle given that it already carrying lets say 7kg already. I hope you can help me with this. Thank you. Im ...
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29 views

Calculating speed of the rotor with slip

The question i'm having trouble with is: Calculate the speed of the rotor of a 6 pole induction motor with a slip of 2.2%. The motor is connected to a 230V single-phase supply. I am familiar with ...
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51 views

12V Pump power supply

I have a 12V pump that will run at 13 amps. I will be controlling it with a float switch and a relay. I have sound several power supplies at reasonable costs that will provide enough current to run ...
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1answer
59 views

AC Induction Motor Constant Speed Control without Tachometer

I want to run the AC induction Motor at a constant speed with LOAD also without Load. So I am controlling motor speed by TRIAC. I can control the motor speed, but my problem is:- I don't have a ...
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1answer
49 views

Can I operate a 500kW/1500rpms motor at 35Hz with 400kW inverter?

In stock we have a 3 phase induction motor with a rated power 500kW and 1490rpms. What is the smallest frequency inverter which we can use to operate this motor in a machine with a maximum power/...
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30 views

Tumble dryer induction motor wiring [migrated]

I have removed a motor from our old Hotpoint tvf770p tumble dryer. The motor was working fine (the rear drum bearing had worked through the bearing and rear casing). I am considering using it on my ...
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1answer
93 views

Powering a 6V motor from a 5V USB battery pack

I'm trying to run a 6V/1A motor from a 5V/2.2A USB battery pack (i.e. a phone-charger battery bank). I'm using a Pololu boost converter to make 6A (>80% efficiency), but the motor never starts, it ...
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1answer
33 views

confusion regarding QNET VTOL(Vertical Take off and Landing)

I was reading a manual about QNET VTOL and i came across a block diagram(shown in attached snapshot) In the explaination of diagram, manual writes that The VTOL device is broken down into two ...
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1answer
49 views

Back EMF of an H Bridge

I am building a H bridge to control a motor in the middle. As an example, when power is fully removed (24V... 80V in the picture below), there is some back EMF that will drive the 24V input rail. ...
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3answers
70 views

Controlling the speed of a single speed AC exhaust fan motor

I have this single speed exhaust fan: 30" Exhaust Fan with Shutter - Direct Drive - 1/4 HP - Single Speed. When it's running it's way faster and louder than I'd like it to be. So I'm trying figure ...
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1answer
88 views

Variable Frequency Drive with AC motor, 30kW

I have a VFD that controls an AC motor which compresses air. It is an 30kW motor. I have set the parameters required to drive the motor and it runs the motor but not properly. During the test the ...
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1answer
36 views

DRV8889 SPI Commands

I've been having some issues diagnosing the relationship between writing to the registers through SPI commands and stepping the motors. That is, it seems like when I write SPI_STEP=1 (and STEP=1) to ...
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3answers
60 views

Real Power or Reactive Power in Superconducting Motors?

My circuits class is teaching that in AC power, there are two kinds of loads. One is a resistive load, with absorbs power at all times. The other is a reactive load, which absorbs zero average power. ...
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3answers
39 views

PSC motor speed affected by capacitor?

I replaced the induction motor in my furnace (PSC type), and it was suggested that I replace the run capacitor at the same time. (They are both 20 years old). The new motor is a Fasco A136, ...
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1answer
49 views

DC brush motor EMI

What kind of frequency does a DC brush motor generate? There are a few explanations online as to what causes EMI in DC brush motors (commutator sparking for example) and how to reduce it, but no ...
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2answers
51 views

Does only wiring 2 poles of a 3 pole overload relay have any effect?

When wiring a single phase starter, they tend to jumper the overload such that all phases of the overload are used. Now, considering that the overload has 3 separate bimetal strips all connected to ...
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1answer
28 views

Running 3 phase asynchronous motor below nominal torque

In class we have a 3 phase asynchronous motor which says 400V delta 690V star. The nominal torque of the motor is 3,7Nm. Can the motor run safely nominal charged on 400V in star configuration? I'm ...
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40 views

Issue with universal motor velocity control by microcontroller

I'm using the circuit in the picture with a BTB12 600BW snuberless triac to control an universal motor (picked from a old washing machine, 220 VAC, 50 Hz) controlled by an arduino nano in customized ...
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0answers
28 views

Electrical device to keep circuit open once an open is detected

I'm working on a laboratory setup that has eight electric motors running at high speed. The motors are enabled by sending a 5 V enable signal from a NI DAQ setup/LabVIEW to the motor amplifiers. ...
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3answers
80 views

3 phase Motor connection, 230V delta or 400V star?

I have a motor with specifications: star 400V delta 230V and motor is of course 3 phase. Now the question is, how can I connect the motor to delta connection if I have only 400V line to line ...
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1answer
53 views

Why would a motor manufacturer offer multiple coil winding types?

I'm currently looking through a part catalog from a motor manufacturer and notice that you can purchase this motor with different motor winding types. Specifically, you can order the motor coil wound ...
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2answers
106 views

is it possible to control 8 motors with 74hc4051?

I need to control 8 motors from Arduino. speed control only with a single pwm output I use a single channel at time I have 74hc4051 analog/digital mux/demux ic if I set mosfet drive circuit ...
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0answers
24 views

Assistance with getting VM3558T motor running

Good afternoon, I've spent quite a while trying to figure out this problem but this field is not my expertise. I'm trying to build an ABS plastic shredding machine for recycling - I've got ...
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1answer
44 views

PMSM Rotor Design. Are these terms equivalent?

I'm working on a project with a PMSM. As I go through the literature I come across the following terms and wanted to make sure that I am getting right which ones are synonyms. Surface-mounted PM = ...
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49 views

Linear motor to power chisel mechanism

I'm building a powered chisel and am considering using a linear tubular motor to power the hammer mechanism. It seems like a perfect fit. However when I searched out similar types of commercially ...
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2answers
148 views

Can the USB interface be used in real-time works

USB works similar to the Master and Slave architecture. There is an Host which is manage the bus as like a Master. There can be various "devices" which is managed by host like slaves. I wonder that ...
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1answer
108 views

Wiring a multi-speed motor from a tower fan

I am trying to fix a tower fan from a friend. He found out that the motor was working, but something on the circuit board wasn't. He then took apart the board from the motor without remembering which ...
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1answer
39 views

How brush shifting affects current distribution in dc machines?

I understand that how armature reaction causes neutral plane to shift by some angle . If brushes are placed along Geometrical Neutral Axis, then there'd be sparking during commutation as voltage ...
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2answers
73 views

Induced EMF in electrical machines

I am currently working with machines and when I try to understand their principles in-depth, specifically in machines, I got to know that EMF is induced because of any of the two reasons: 1) Time-...
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1answer
60 views

can use these printer motors to made CNC machine? [closed]

can i use this motor to make a cnc plottor ? is there any way to make a stepper motor using this motor?
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3answers
51 views

Brushless DC motor values at voltage other than nominal

I am currently using a maxon three phase BLDC motor (datasheet PN:412825) that is rated for 48 volts (see spec sheet below). I am running the motor at 18.5 volts (requirement for my application). I am ...
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4answers
2k views

Is a PWM required for regenerative braking on a DC Motor?

The DC Motor is question is here: DC Motor I was wondering if you use a diode and a switch in a manner shown in the below picture if the motor would exhibit regenerative braking when SW1 is open? (...
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1answer
35 views

connecting single phase motor to UK mains AC

I have a single phase single volt (UK 220-240) 1Hp electric motor with two capacitors, start and run. As photographed. This is to run my Milling machine. I need to connect the motor, via ...
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1answer
39 views

Best way to power 2 motors with 1 power supply?

I have 2 identical DC motors rated at 12 volts each. I also have a 12-volt power supply. If I put these in parallel, would the motors draw their required current, or is it limited to the current drawn ...